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admin/state-overlay: Require root and don't lock sysroot #3158

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merged 2 commits into from
Feb 6, 2024

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jlebon
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@jlebon jlebon commented Feb 6, 2024

Not required for anything in particular, but it's good to use the right flags here anyway.

Not required for anything in particular, but it's good to use the right
flags here anyway.
@cgwalters
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Ahh wait, I think I see the problem with the ISO:

[    9.246494] /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator: line 24: /etc/sysctl.d/20-coreos-autologin-kernel-printk.conf: Read-only file system
[    9.248799] (sd-execu[853]: /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator failed with exit status 1.
[    9.250262] (sd-execu[853]: /usr/lib/systemd/system-generators/ostree-system-generator terminated by signal ABRT.

jlebon added a commit to jlebon/fedora-coreos-config that referenced this pull request Feb 6, 2024
This doesn't work anymore since systemd locked down where generators
can write files:

    [    9.246494] /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator: line 24: /etc/sysctl.d/20-coreos-autologin-kernel-printk.conf: Read-only file system

But anyway, nowadays this duplicates `coreos-printk-quiet.service` which
was added two years after this code was written (coreos#1840).

Noticed by Colin in
ostreedev/ostree#3158 (comment).
In CoreOS live environments, we do have `/run/ostree` but no `ostree=`
karg; we hackily fool `ostree-prepare-root.service` by bind-mounting
over `/proc/cmdline` so it does the right thing. Presumably, we should
clean this up eventually, but even so we don't want to require PXE users
to add an `ostree=` arg, so we need to tolerate this.

So this assertion would fail there. Restore the behaviour prior to
b9ce0e8 and re-add a more contemporary comment.

Fixes b9ce0e8 ("generator: Exit if there's no `/run/ostree`").
@jlebon
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jlebon commented Feb 6, 2024

Ahh wait, I think I see the problem with the ISO:

[    9.246494] /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator: line 24: /etc/sysctl.d/20-coreos-autologin-kernel-printk.conf: Read-only file system
[    9.248799] (sd-execu[853]: /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator failed with exit status 1.
[    9.250262] (sd-execu[853]: /usr/lib/systemd/system-generators/ostree-system-generator terminated by signal ABRT.

Nice.

First one fixed by coreos/fedora-coreos-config#2839.

For the second one, added a commit which I didn't test, but I'm 99% sure will fix it.

Now... why this passed CI in #3147 but failed here, I'm not sure.

dustymabe pushed a commit to coreos/fedora-coreos-config that referenced this pull request Feb 6, 2024
This doesn't work anymore since systemd locked down where generators
can write files:

    [    9.246494] /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator: line 24: /etc/sysctl.d/20-coreos-autologin-kernel-printk.conf: Read-only file system

But anyway, nowadays this duplicates `coreos-printk-quiet.service` which
was added two years after this code was written (#1840).

Noticed by Colin in
ostreedev/ostree#3158 (comment).
@ericcurtin ericcurtin merged commit ecbd1f7 into ostreedev:main Feb 6, 2024
24 checks passed
aaradhak pushed a commit to aaradhak/fedora-coreos-config that referenced this pull request Mar 18, 2024
This doesn't work anymore since systemd locked down where generators
can write files:

    [    9.246494] /usr/lib/systemd/system-generators/coreos-liveiso-autologin-generator: line 24: /etc/sysctl.d/20-coreos-autologin-kernel-printk.conf: Read-only file system

But anyway, nowadays this duplicates `coreos-printk-quiet.service` which
was added two years after this code was written (coreos#1840).

Noticed by Colin in
ostreedev/ostree#3158 (comment).
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3 participants